. >>> we be -- i'm tori campbell. >>> we begin with a big rig fire. it happened at 3:00 this morning. tara moriarty is live with more. good morning, tara. >> reporter: good morning. it's a route that this truck driver says he's taken twice a month. when he came through this parking lot here, there was a wire. he says that's not normally here. that's what the big rig snagged. if you look here you can see the remains of the truck here. now, we could see and hear sparks. there was an explosion and could you feel the heat yards away. it happened around 3:15 at sweeney camp which is part of the juvenile detention facility off fairmont drive. two men were trapped inside the big rig hit the power lines. he just happens to be a volunteer firefighter. >> he trains as a volunteer firefighter told him if you are in energized wires to jump. they may not have known they were energized at the time but they jumped. >> reporter: we've been speaking to the men. they are pretty grateful. the volunteer firefighter knew to jump and then the firefighters arrived. and they